LazyVal => Add possibility to give directly the value

helpers/LazyVal.ts

 class LazyVal<T> {
     private val: T = null;
 
-    constructor(private valLoader: () => Promise<T>) {}
+    constructor(private valLoader: () => Promise<T> | T) {}
 
     get value(): Promise<T> {
         return new Promise<T>(async (resolve) => {